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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001181431-09-028696.txt : 20090603
<SEC-HEADER>0001181431-09-028696.hdr.sgml : 20090603
<ACCEPTANCE-DATETIME>20090603170302
ACCESSION NUMBER:		0001181431-09-028696
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090601
FILED AS OF DATE:		20090603
DATE AS OF CHANGE:		20090603

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NewStar Financial, Inc.
		CENTRAL INDEX KEY:			0001373561
		STANDARD INDUSTRIAL CLASSIFICATION:	FINANCE LESSORS [6172]
		IRS NUMBER:				542157878

	BUSINESS ADDRESS:	
		STREET 1:		500 BOYLSTON STREET
		STREET 2:		SUITE 1600
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		617-848-2500

	MAIL ADDRESS:	
		STREET 1:		500 BOYLSTON STREET
		STREET 2:		SUITE 1600
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			OZ MANAGEMENT LP
		CENTRAL INDEX KEY:			0001054587
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33211
		FILM NUMBER:		09871912

	BUSINESS ADDRESS:	
		STREET 1:		9 WEST 57TH STREET, 39TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
		BUSINESS PHONE:		2127900165

	MAIL ADDRESS:	
		STREET 1:		9 WEST 57TH STREET, 39TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

	FORMER NAME:	
		FORMER CONFORMED NAME:	OZ MANAGEMENT LLC
		DATE OF NAME CHANGE:	19980204
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rrd244685.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-06-01</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001373561</issuerCik>
        <issuerName>NewStar Financial, Inc.</issuerName>
        <issuerTradingSymbol>NEWS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001054587</rptOwnerCik>
            <rptOwnerName>OZ MANAGEMENT LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9 WEST 57TH STREET</rptOwnerStreet1>
            <rptOwnerStreet2>39TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10019</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2009-06-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1115847</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.72</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4870709</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                    <footnoteId id="F6"/>
                    <footnoteId id="F7"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2009-06-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>9500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.87</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4861209</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                    <footnoteId id="F6"/>
                    <footnoteId id="F7"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2009-06-01</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3653</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.06</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4857556</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                    <footnoteId id="F6"/>
                    <footnoteId id="F7"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents securities directly held by OZ Master Fund, Ltd., Gordel Holdings Limited, Goldman Sachs &amp; Company Profit Sharing Master Trust, and OZ Global Special Investments Master Fund, LP, (the &quot;Funds&quot;).</footnote>
        <footnote id="F2">OZ Management, LP (&quot;OZ&quot;),  as investment manager to OZ Master Fund, Ltd., Gordel Holdings Limited, and Goldman Sachs &amp; Company Profit Sharing Master Trust, may be deemed to be the beneficial owner of the Issuer's securities held by the Funds.  OZ disclaims beneficial  ownership of such securities, and this report shall not be deemed an admission that OZ is the beneficial owner of the securities for the purpose of Section 16 or for any other purpose, except to its  pecuniary interest therein.</footnote>
        <footnote id="F3">OZ Advisors II, LP, (&quot;OZAII&quot;), as general partner to OZ Global Special Investments Master Fund, LP, may be deemed to be the beneficial owner of the Issuer's securities held by the fund. OZAII disclaims beneficial ownership of such securities, and this report shall not be deemed an admission that OZAII is the beneficial owner of the securities for the purpose of Section 16 or for other purpose, except to its pecuniary interest therein.</footnote>
        <footnote id="F4">Och-Ziff Holding LLC, as general partner to OZ Advisors II, LP, may be deemed to be the beneficial owner of the Issuer's securities held by OZ Global Special Investments Master Fund, LP.  Och-Ziff Holding LLC disclaims beneficial ownership of such securities, and this report shall not be deemed an admission that Och-Ziff Holding LLC is the beneficial owner of the securities for the purpose of Section 16 or for any other purpose, except to its pecuniary interest therein.</footnote>
        <footnote id="F5">Och-Ziff Holding Corporation, as general partner to OZ Management, LP, may be deemed to be the beneficial owner of the Issuer's securities held by the Funds.  Och-Ziff Holding Corporation disclaims beneficial ownership of such securities, and this report shall not be deemed an admission that Och-Ziff Holding Corporation is the beneficial owner of the securities for the purpose of Section 16 or for any other purpose, except to its pecuniary interest therein.</footnote>
        <footnote id="F6">Och-Ziff Capital Management Group LLC (&quot;OZM&quot;), as the sole shareholder of both Och-Ziff Holding LLC and Och-Ziff Holding Corporation, may be deemed to be the beneficial owner of the Issuer's securities held by the Funds.  Och-Ziff Capital Management Group disclaims beneficial ownership of such securities, and this report shall not be deemed an admission that OZM is the beneficial owner of the securities for the purpose of Section 16 or for any other purpose, except to its pecuniary interest therein.</footnote>
        <footnote id="F7">Daniel S. Och, as Chief Executive Officer and Executive Managing Director of Och-Ziff Capital Management Group, LLC, may be deemed to be the beneficial owner of the       Issuer's securities held by the Funds.  Mr. Och disclaims beneficial ownership of such securities, and this report shall not be deemed an admission that Mr. Och is the beneficial      owner of the securities for the purpose of Section 16 or for any other purpose, except to his pecuniary interest therein.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>OZ MANAGEMENT LP, By Och-Ziff Holding Corporation, its General Partner; By Och-Ziff Capital Management Group, LLC its sole shareholder; By: /s/ Daniel S. Och - Chief Executive Officer</signatureName>
        <signatureDate>2009-06-03</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>OZ ADVISORS II, LP, By Och-Ziff Holding LLC, its General Partner; By Och-Ziff Capital Management Group, LLC its sole shareholder; By: /s/ Daniel S. Och - Chief Executive Officer</signatureName>
        <signatureDate>2009-06-03</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>OCH-ZIFF  HOLDING CORPORATION, By Och-Ziff Capital Management Group LLC, its sole shareholder; By: /s/ Daniel S. Och  - Chief Executive Officer</signatureName>
        <signatureDate>2009-06-03</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>OCH-ZIFF  HOLDING LLC, By Och-Ziff Capital Management Group LLC, its sole shareholder; By:/s/ Daniel S. Och - Chief Executive Officer</signatureName>
        <signatureDate>2009-06-03</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>OCH-ZIFF CAPITAL MANAGEMENT GROUP LLC, By:/s/ Daniel S. Och</signatureName>
        <signatureDate>2009-06-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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